Standard Lemma guide

effectiveness

noun · 5 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /ɪˈfɛk.tɪv.nɪs/ weak vowel distinction
  • US: Recorded audio is listed in the source snapshot.
  • /əˈfɛk.tɪv.nəs/ weak vowel merger
  • CMU ARPABET: IH0 F EH1 K T IH0 V N AH0 S Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
  • CMU ARPABET 2: IY1 F EH0 K T IH0 V N AH0 S Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

The property of being effective, of achieving results.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Examples

  • The effectiveness of the drug was well established.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The capacity or potential for achieving results.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

The degree to which something achieves results.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Examples

  • He questioned the effectiveness of the treatment.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

capacity to produce strong physiological or chemical effects

Definition source: Princeton WordNet 3.0

Examples

  • the toxin's potency
  • the strength of the drinks

Meaning relationships

Synonyms: potency, strength

Antonyms: none provided

Broader terms: power, powerfulness

5

noun

Meaning 5

power to be effective; the quality of being able to bring about an effect

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: effectivity, effectualness, effectuality

Antonyms: ineffectiveness

Broader terms: power, powerfulness

Narrower terms: incisiveness, trenchancy, efficacy, efficaciousness

History

Etymology

Etymology tree Proto-Indo-European *h1éǵh Proto-Indo-European *-s Proto-Indo-European *h1éǵhs Proto-Italic *eks Latin ex Latin ef- Proto-Indo-European *dheh1- Proto-Indo-European *dheh1k- Proto-Indo-European *-yéti Proto-Indo-European *dhh1kyéti Proto-Italic *θakjō Proto-Italic *fakjō Latin faciō Latin efficiō Proto-Indo-European *-wós Proto-Indo-European *-iHwósder. Latin -īvus Latin effectīvusbor. French effectifder. English effective Proto-Germanic *-in- Proto-Indo-European *-h2 Proto-Indo-European *-éh2 Proto-Indo-European *-yéti Proto-Indo-European *-eh2yéti Proto-Indo-European *-h2ti Proto-Germanic *-ōną Proto-Germanic *-inōną Proto-Indo-European *-dyé- Proto-Germanic *-atjaną Proto-Indo-European *-tus Proto-Germanic *-þuz Proto-Germanic *-assuz Proto-Germanic *-inassuz Proto-West Germanic *-nassī Old English -nes Middle English -nesse English -ness English effectiveness From effective + -ness.

Across languages

Translations

57 source translations are retained for this English entry.

  • Abkhaz: аеффектра (ajeffekʼtʼra) — property
  • Azerbaijani: səmərə — property
  • Catalan: efectivitat — property
  • Chinese Mandarin: 有效性 (yǒuxiàoxìng) — property
  • Egyptian: Ax-x:W-Y1:Z2 (ꜣḫw) — property
  • Finnish: vaikuttavuus — property
  • French: efficacité — property
  • Georgian: ეფექტიანობა (epekṭianoba) — property
  • German: Wirksamkeit — property
  • German: Effektivität — property
  • German: Wirkungsfähigkeit — property
  • Greek: αποτελεσματικότητα (apotelesmatikótita) — property
  • Ancient Greek: δρᾶσις (drâsis) — property
  • Hungarian: hatásosság — property
  • Hungarian: eredményesség — property
  • Indonesian: efektivitas — property
  • Indonesian: keefektifan — property
  • Italian: efficacia — property
  • Kazakh: нәтижелілік (nätijelılık) — property
  • Kazakh: тиімділік (tiımdılık) — property
  • Central Kurdish: بەسوودی (besûdî) — property
  • Latvian: iedarbīgums — property
  • Latvian: lietderīgums — property
  • Latvian: efektivitāte — property
  • Malay: keberkesanan — property
  • Malayalam: ഫലപ്രാപ്തി (phalaprāpti) — property
  • Manx: breeoilid — property
  • Plautdietsch: Wirkjunk — property
  • Polish: skuteczność — property
  • Portuguese: eficiência — property
  • Romanian: eficacitate — property
  • Romanian: eficiență — property
  • Russian: эффекти́вность (effektívnostʹ) — property
  • Russian: результати́вность (rezulʹtatívnostʹ) — property
  • Serbo-Croatian: učinkòvitōst — property
  • Serbo-Croatian: djelotvórnōst — property
  • Serbo-Croatian: ȅfikasnōst — property
  • Spanish: efectividad — property
  • Ukrainian: ефекти́вність (efektývnistʹ) — property
  • Ukrainian: результати́вність (rezulʹtatývnistʹ) — property
  • Finnish: vaikuttavuus — capacity or potential
  • German: Durchsetzungsfähigkeit — capacity or potential
  • German: Durchsetzungsvermögen — capacity or potential
  • Spanish: eficacia — capacity or potential
  • Azerbaijani: səmərə — degree
  • Chinese Mandarin: 成效 (chéngxiào) — degree
  • Chinese Mandarin: 效力 (xiàolì) — degree
  • Dutch: effectiviteit — degree
  • Finnish: vaikuttavuus — degree
  • Finnish: teho — degree
  • German: Wirksamkeit — degree
  • German: Wirkungsgrad — degree
  • Hungarian: hatásosság — degree
  • Italian: efficacia — degree
  • Kazakh: нәтижелілік (nätijelılık) — degree
  • Russian: эффекти́вность (effektívnostʹ) — degree
  • Russian: результати́вность (rezulʹtatívnostʹ) — degree
Real reading context

effectiveness in complete knowledge articles